<template>
    <div>
        <!-- 面包屑导航区域 -->
		<el-breadcrumb separator-class="el-icon-arrow-right">
			<el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
			<el-breadcrumb-item>数据统计</el-breadcrumb-item>
			<el-breadcrumb-item>数据报表</el-breadcrumb-item>
		</el-breadcrumb>
        <!-- 卡片视图区域 -->
        <el-card>
            <!-- 为ECharts准备一个具备大小（宽高）的Dom -->
            <div id="main" style="width: 750px;height:400px;"></div>
        </el-card>
    </div>
</template>

<script>
// 导入echarts
import echarts from 'echarts'
import _ from 'lodash'
export default {
    data() {
        return {
        // 需要合并的数据
        options: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
        }
    },
    create() {},
    // 此时页面上的元素已经被渲染完毕了
    async mounted() {
        // 基于准备好的dom，初始化echarts实例
        var myChart = echarts.init(document.getElementById('main'));// eslint-disable-line no-unused-vars
        // 发起请求获取数据
        const { data: res } = await this.$http.get('reports/type/1')
        if (res.meta.status !== 200){
            return this.$message.error('获取数据失败!')
        }
        // 准备数据(合并数据对象)
        const result = _.merge(res.data, this.options)
        // 展示数据
        myChart.setOption(result)
    },
    methods: {}
}
</script>

<style lang="less" scoped>

</style>
